X-Git-Url: https://git.danieliu.xyz/?a=blobdiff_plain;f=viewer.c;h=15b5e6a84f8dd2f321f248e725c0b1a8c4808654;hb=5e77cd8cc9723829ce6fcd09e4a52207d6112d70;hp=0f5d92896ec14c047fc8701b3cf70f01fe4b4726;hpb=f92a7609f7b4a6c72a892b16d371528213eca283;p=smdp.git

diff --git a/viewer.c b/viewer.c
index 0f5d928..15b5e6a 100644
--- a/viewer.c
+++ b/viewer.c
@@ -1,8 +1,32 @@
+/*
+ * Functions necessary to display a deck of slides in different color modes
+ * using ncurses. Only white, red, and blue are supported, as they can be
+ * faded in 256 color mode.
+ * Copyright (C) 2014 Michael Goehler
+ *
+ * This file is part of mpd.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include <locale.h> // setlocale
 #include <ncurses.h>
 #include <stdlib.h>
+#include <string.h> // strchr
 #include <unistd.h>
 
-#include "include/parser.h"
 #include "include/viewer.h"
 
 static short white_ramp[24] = { 16, 232, 233, 234, 235, 236,
@@ -51,6 +75,9 @@ int ncurses_display(deck_t *deck, int notrans, int nofade) {
         slide = slide->next;
     }
 
+    // set locale to display UTF-8 correctly in ncurses
+    setlocale(LC_CTYPE, "");
+
     // replace stdin with current tty if markdown input was piped
     freopen("/dev/tty", "rw", stdin);
 
@@ -124,6 +151,7 @@ int ncurses_display(deck_t *deck, int notrans, int nofade) {
     }
 
     // setup footer
+    //TODO display slide number in footer
     if(bar_bottom) {
         line = deck->header->next;
         offset = next_blank(line->text, 0) + 1;
@@ -229,6 +257,9 @@ int ncurses_display(deck_t *deck, int notrans, int nofade) {
 
 void add_line(WINDOW *window, int y, int x, line_t *line, int max_cols) {
     int i = 0; // increment
+    char *c; // char pointer for iteration
+    char *special = "\\*_"; // list of interpreted chars
+    cstack_t *stack = cstack_init();
 
     if(line->text->text) {
         int offset = 0; // text offset
@@ -248,18 +279,9 @@ void add_line(WINDOW *window, int y, int x, line_t *line, int max_cols) {
                       y, x,
                       "%s", &line->text->text[offset]);
 
-        // IS_QUOTE
-        } else if(CHECK_BIT(line->bits, IS_QUOTE)) {
-            //TODO replace greater sign with color block
-
-            //FIXME remove dummy print code
-            mvwprintw(window,
-                      y, x,
-                      "%s", &line->text->text[offset]);
-
         } else {
 
-            // IF_H1 || IF_H2
+            // IS_H1 || IS_H2
             if(CHECK_BIT(line->bits, IS_H1) || CHECK_BIT(line->bits, IS_H2)) {
 
                 // set headline color
@@ -281,11 +303,101 @@ void add_line(WINDOW *window, int y, int x, line_t *line, int max_cols) {
                 wattroff(window, A_UNDERLINE);
 
             } else {
-                //TODO for each char in line
-                    //TODO if *|_ highlight (maybe use a stack here?)
-                mvwprintw(window,
-                      y, x,
-                      "%s", &line->text->text[offset]);
+                // move the cursor in position
+                wmove(window, y, x);
+
+                // IS_QUOTE
+                if(CHECK_BIT(line->bits, IS_QUOTE)) {
+                    while(line->text->text[offset] == '>') {
+                        // print a reverse color block
+                        wattron(window, A_REVERSE);
+                        wprintw(window, "%s", " ");
+                        wattroff(window, A_REVERSE);
+                        wprintw(window, "%s", " ");
+                        // find next quote or break
+                        offset++;
+                        if(line->text->text[offset] == ' ')
+                            offset = next_word(line->text, offset);
+                    }
+                }
+
+                // for each char in line
+                c = &line->text->text[offset];
+                while(*c) {
+
+                    // if char is in special char list
+                    if(strchr(special, *c)) {
+
+                        // closing special char (or second backslash)
+                        if((stack->top)(stack, *c)) {
+
+                            switch(*c) {
+                                // print escaped backslash
+                                case '\\':
+                                    wprintw(window, "%c", *c);
+                                    break;
+                                // disable highlight
+                                case '*':
+                                    wattron(window, COLOR_PAIR(CP_WHITE));
+                                    break;
+                                // disable underline
+                                case '_':
+                                    wattroff(window, A_UNDERLINE);
+                                    break;
+                            }
+
+                            // remove top special char from stack
+                            (stack->pop)(stack);
+
+                        // treat special as regular char
+                        } else if((stack->top)(stack, '\\')) {
+                            wprintw(window, "%c", *c);
+
+                            // remove backslash from stack
+                            (stack->pop)(stack);
+
+                        // opening special char
+                        } else {
+                            switch(*c) {
+                                // enable highlight
+                                case '*':
+                                    wattron(window, COLOR_PAIR(CP_RED));
+                                    break;
+                                // enable underline
+                                case '_':
+                                    wattron(window, A_UNDERLINE);
+                                    break;
+                                // do nothing for backslashes
+                            }
+
+                            // push special char to stack
+                            (stack->push)(stack, *c);
+                        }
+
+                    } else {
+                        // print regular char
+                        wprintw(window, "%c", *c);
+                    }
+
+                    c++;
+                }
+
+                // pop stack until empty to prevent formated trailing spaces
+                while(!(stack->empty)(stack)) {
+                    switch((stack->pop)(stack)) {
+                        case '\\':
+                            wprintw(window, "%c", '\\');
+                            break;
+                        // disable highlight
+                        case '*':
+                            wattron(window, COLOR_PAIR(CP_WHITE));
+                            break;
+                        // disable underline
+                        case '_':
+                            wattroff(window, A_UNDERLINE);
+                            break;
+                    }
+                }
             }
         }
 
@@ -298,6 +410,8 @@ void add_line(WINDOW *window, int y, int x, line_t *line, int max_cols) {
         wattroff(window, A_UNDERLINE);
         wattroff(window, A_REVERSE);
     }
+
+    (stack->delete)(stack);
 }
 
 void fade_out(WINDOW *window, int trans, int colors) {